At this year's CeBIT IT trade show in Hannover, The H spoke with BIND 10 Programme Manager Shane Kerr about the next version of BIND, the most widely used Domain Name System (DNS) server on the Internet.

Like BIND 9, BIND 10 is a complete re-design and re-write of the previous version. Development on the BIND 10 project officially began on the 1st of April, 2009.

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I saw Shane Kerr at T-Dose In October 2009, I suspect it was mostly the same talk as this one (He was the guy with the "OSI-model shirts", I think you got one to?).
He then expected a stable & fully usable bind 10 version was still about 5 years away, so it may be that "bind 10 is coming", but it sure is going to take a while.

Your link mentions that Bind 10 will be a rewrite, but it doesn't mention that Bind 10 will be a rewrite in Python. Using C++ for some speed-critical parts ...

At this talk Shane mentioned that Bind 9 wasn't particularly well designed, using stuff as threads that aren't really needed and added more because it was the "hype of the day" instead of properly thought out technical reasons.
One can't help but wonder if they are repeating that same mistake again, using an interpreted high-level language such as Python which is "today's hype" ... I guess only time can tell, but I do know there are some other secure and stable DNS resolvers/root server that don't need a high-level interpreted language (Such as djb's DNS package, MaraDNS, etc.)

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UNIX was not designed to stop you from doing stupid things, because that would also stop you from doing clever things.

I'm happy to see BIND continue to evolve, but a second rewrite!? That IMHO is a bit alarming, especially this soon after 9 came out, but then again, I don't believe much in total rewrites from scratch either.